jquery multiple image merge.

Hey, does anyone have a product (or is interested in building) that will let me upload multiple jpg images onto a canvas image. Move, resize, border choices, then save everything to one merged image. Or alternatively, output the coordinates of all overlayed images so a backend process could merge (ie imagemagick). The fancy product designer plugin is quite close, you have a base image, you can add images, manipulate them, then save. It has overhead with coloring and pricing, but close to the idea. Any jquery plugins out there like this?